Genetic Variant SLC29A3:p.Leu43Arg (chr10-71322882-T-G) – ACMG Classification: Benign (-13 pts)

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_018344.6(SLC29A3):c.128T>G(p.Leu43Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000403 in 1,614,232 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L43P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0022 ( 2 hom., cov: 34)

Exomes 𝑓: 0.00022 ( 0 hom. )

Consequence

SLC29A3
NM_018344.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:7

Conservation

PhyloP100: 0.511

Publications

1 publications found

Variant links:

Genes affected

SLC29A3 (HGNC:23096): (solute carrier family 29 member 3) This gene encodes a nucleoside transporter. The encoded protein plays a role in cellular uptake of nucleosides, nucleobases, and their related analogs. Mutations in this gene have been associated with H syndrome, which is characterized by cutaneous hyperpigmentation and hypertrichosis, hepatosplenomegaly, heart anomalies, and hypogonadism. A related disorder, PHID (pigmented hypertrichosis with insulin-dependent diabetes mellitus), has also been associated with mutations at this locus. Alternatively spliced transcript variants have been described.[provided by RefSeq, Mar 2010]

SLC29A3 Gene-Disease associations (from GenCC):

H syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia
dysosteosclerosis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

SLC29A3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0040622056).

BP6

Variant 10-71322882-T-G is Benign according to our data. Variant chr10-71322882-T-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 287285.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00215 (328/152364) while in subpopulation AFR AF = 0.00769 (320/41590). AF 95% confidence interval is 0.007. There are 2 homozygotes in GnomAd4. There are 147 alleles in the male GnomAd4 subpopulation. Median coverage is 34. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018344.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SLC29A3	NM_018344.6	MANE Select	c.128T>G	p.Leu43Arg	missense	Exon 2 of 6	NP_060814.4
SLC29A3	NM_001174098.2		c.128T>G	p.Leu43Arg	missense	Exon 2 of 6	NP_001167569.1
SLC29A3	NM_001363518.2		c.-107T>G		5_prime_UTR	Exon 2 of 6	NP_001350447.1	A0A2R8YDR8

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SLC29A3	ENST00000373189.6	TSL:1 MANE Select	c.128T>G	p.Leu43Arg	missense	Exon 2 of 6	ENSP00000362285.5	Q9BZD2-1
SLC29A3	ENST00000479577.2	TSL:2	c.-107T>G		5_prime_UTR	Exon 2 of 6	ENSP00000493995.1	A0A2R8YDR8
SLC29A3	ENST00000642198.1		n.-107T>G		non_coding_transcript_exon	Exon 2 of 6	ENSP00000494827.1	A0A2R8Y5U2

Frequencies

GnomAD3 genomes

AF:

0.00215

AC:

328

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00772

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.000498

AC:

125

AN:

251158

AF XY:

0.000361

show subpopulations

Gnomad AFR exome

AF:

0.00677

Gnomad AMR exome

AF:

0.000347

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000221

AC:

323

AN:

1461868

Hom.:

Cov.:

AF XY:

0.000180

AC XY:

131

AN XY:

727232

show subpopulations

African (AFR)

AF:

0.00812

AC:

272

AN:

33480

American (AMR)

AF:

0.000268

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53394

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000809

AC:

AN:

1112012

Other (OTH)

AF:

0.000430

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

119

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00215

AC:

328

AN:

152364

Hom.:

Cov.:

AF XY:

0.00197

AC XY:

147

AN XY:

74514

show subpopulations

African (AFR)

AF:

0.00769

AC:

320

AN:

41590

American (AMR)

AF:

0.000327

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68036

Other (OTH)

AF:

0.00142

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000651

Hom.:

Bravo

AF:

0.00253

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00658

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000610

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

H syndrome (2)

Inborn genetic diseases (1)

not specified (1)

SLC29A3-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.36

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.011

Eigen

Benign

-0.52

Eigen_PC

Benign

-0.42

FATHMM_MKL

Benign

0.33

LIST_S2

Benign

0.63

M_CAP

Benign

0.012

MetaRNN

Benign

0.0041

MetaSVM

Benign

-0.94

MutationAssessor

Benign

1.2

PhyloP100

0.51

PrimateAI

Benign

0.44

PROVEAN

Benign

0.13

REVEL

Benign

0.12

Sift

Benign

0.12

Polyphen

0.0

Vest4

0.096

MVP

0.60

MPC

0.088

ClinPred

0.0067

GERP RS

2.8

Varity_R

0.068

gMVP

0.44

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over